[1]陶 琦.高、低浓度硫酸盐侵蚀下不同水灰比混凝土抗剪性能的受损劣化规律[J].西安建筑科技大学学报(自然科学版),2021,(05):630-635.[doi:10.15986/j.1006-7930.2021.05.003 ]
 TAO Qi.Damage and deterioration of shear properties of concrete with different water cement ratio under high and low concentration sulfate attack[J].J. Xi'an Univ. of Arch. & Tech.(Natural Science Edition),2021,(05):630-635.[doi:10.15986/j.1006-7930.2021.05.003 ]
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高、低浓度硫酸盐侵蚀下不同水灰比混凝土抗剪性能的受损劣化规律()
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西安建筑科技大学学报(自然科学版)[ISSN:1006-7930/CN:61-1295/TU]

卷:
期数:
2021年05期
页码:
630-635
栏目:
出版日期:
2021-10-25

文章信息/Info

Title:
Damage and deterioration of shear properties of concrete with different water cement ratio under high and low concentration sulfate attack
文章编号:
1006-7930(2021)05-0630-06
作者:
陶 琦
(中铁十九局集团 第六工程有限公司,江苏 无锡 214028)
Author(s):
TAO Qi
(China Railway 19th Bureau Group Sixth Engineering Co., Ltd., Jiangsu Wuxi 214028, China)
关键词:
硫酸盐侵蚀 混凝土 抗剪指标 劣化特性 试验研究
Keywords:
sulfate attack concrete shear properties degradation characteristics experimental study
分类号:
U213.1
DOI:
10.15986/j.1006-7930.2021.05.003
文献标志码:
A
摘要:
通过室内硫酸盐侵蚀试验及直剪试验,研究了高、低浓度硫酸盐侵蚀下不同水灰比混凝土抗剪强度受损劣化规律.试验结果表明:混凝土抗剪性能随硫酸盐侵蚀时间的增加逐渐衰退.具体表现为混凝土试件名义粘聚力和名义剪胀率随硫酸盐侵蚀时间的增长呈现逐渐减小的变化规律,且高浓度硫酸盐溶液下试件抗剪强度损失更显著; 而试件内摩擦角在低浓度下呈现非线性降低趋势,在高浓度下呈现先短暂增加后减小的趋势.
Abstract:
Through indoor sulfate corrosion test and direct shear test, the shear strength reduction law of concrete with different water cement ratio under high and low concentration sulfate attack is studied. The test results show that the shear resistance of concrete gradually declines with the increase of sulfate attack time. The specific performance is that the nominal cohesion and the nominal shear expansion rate of concrete specimens gradually decrease with the increase of erosion time, and the shear strength loss of specimens under high concentration of sulfate solution is more significant; while the internal friction angle of concrete specimens shows a nonlinear decreasing trend at low concentration, and increases briefly and then decreases at high concentration.

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备注/Memo

备注/Memo:
收稿日期:2021-01-15修改稿日期:2021-09-28
基金项目:国家自然科学基金项目(51904110)
第一作者:陶琦(1976-),男,硕士,高级工程师,主要研究方向为造桥施工技术.E-mail:taoqi123hy@163.com
更新日期/Last Update: 2021-10-25